MyBB SQL Error

MyBB has experienced an internal SQL error and cannot continue.

SQL Error:
126 - Index for table './default_mivn1/irmn_sessions.MYI' is corrupt; try to repair it
Query:
REPLACE INTO irmn_sessions SET `uid`=0,`sid`='d4e66a5889049bcfa8e261a0d50fdb2e',`time`=1711644204,`ip`=X'2ccab776',`location`='/showthread.php?tid=70&pid=186',`useragent`='claudebot',`location1`=2,`location2`=70,`nopermission`=0